D Matthew Feldmann and Frederick W King 2008 J. Phys. B: At. Mol. Opt. Phys. 41 025002 doi:10.1088/0953-4075/41/2/025002
Upper bound to the critical binding nuclear charge for a three-electron atomic system
D Matthew Feldmann1,2,3 and Frederick W King3
Show affiliationsThe three-electron ground state atomic energy in the Z → 2 limit, where Z is the nuclear charge, is studied using high precision Hylleraas-type calculations, with the objective to investigate the stability of the ground state of the helium negative ion. Finite nuclear mass effects and relativistic corrections are incorporated in the computations. The calculations reveal that the critical binding nuclear charge, Zc, the value below which the three-electron system is no longer stable, is bounded above by Zc = 2.000 001.
- PACS
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31.30.J- Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions
- Subjects
- Dates
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Issue 2 (28 January 2008)
Received 3 October 2007, in final form 26 November 2007
Published 8 January 2008
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Upper bound to the critical binding nuclear charge for a three-electron atomic system
D Matthew Feldmann and Frederick W King 2008 J. Phys. B: At. Mol. Opt. Phys. 41 025002
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